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Vertical distribution of cephalopods at 30°N 23°W in the North Atlantic

Published online by Cambridge University Press:  11 May 2009

M. R. Clarke  and
C. C. Lu
M. R. Clarke
Affiliation:
The Laboratory, Marine Biological Association, Citadel Hill, Plymouth, and Memorial University of Newfoundland, St John's, Newfoundland, Canada
C. C. Lu
Affiliation:
The Laboratory, Marine Biological Association, Citadel Hill, Plymouth, and Memorial University of Newfoundland, St John's, Newfoundland, Canada
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Extract

A total of 618 cephalopods comprising 29 identified species and 98 young unidentified larvae were collected at 30° N 23° W in opening–closing rectangular midwater trawls (RMT combination net), an Isaacs Kidd midwater trawl equipped with an openingclosing bucket and a British Columbia midwater trawl. Discrete horizons were fished between the surface and 2000 m and day and night vertical distribution for the more common species is described. Material is sufficiently abundant to draw tentative conclusions on the vertical distributions of 16 species. These show a wide variety of migratory and non-migratory behaviour including diel migration, ontogenetic migration and static distribution at various depths and over various depth ranges.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 54 , Issue 4 , November 1974 , pp. 969 - 984
Copyright
Copyright © Marine Biological Association of the United Kingdom 1974

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